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A kind of preparation method of manganese dioxide-conductive polypropylene composite anode plate

A technology of manganese dioxide and composite anode, which is applied in the direction of electrodes, electrolytic components, electrolytic process, etc., can solve the problems such as the quality reduction of cathode zinc products, and achieve the effects of good connection, low oxygen evolution potential, and improved conductivity

Active Publication Date: 2020-12-18
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing a manganese dioxide-conductive polypropylene composite anode plate, which solves the problem that the manganese dioxide in the prior art is difficult to form a stable connection with the metal by hot pressing and the lead-based anode The use of the use will reduce the quality of cathode zinc products

Method used

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  • A kind of preparation method of manganese dioxide-conductive polypropylene composite anode plate
  • A kind of preparation method of manganese dioxide-conductive polypropylene composite anode plate
  • A kind of preparation method of manganese dioxide-conductive polypropylene composite anode plate

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Embodiment 1

[0031] A preparation method of a manganese dioxide-conductive polypropylene composite anode plate, specifically implemented according to the following steps:

[0032] Step 1. Measure the following raw materials by volume percentage: 10% of carbon black with a particle size of 0.5mm, 0.1% of copper powder with a particle size of 50 mesh, and the balance being polypropylene powder with a particle size of 50 mesh.

[0033] Step 2. Fully grind the carbon black measured in step 1, fully mix it with copper powder and polypropylene powder to obtain a mixed powder, and evenly spread the mixed powder on the preheated and sprayed with silicone oil release agent on both sides of the ceramic plate In between, when spraying the silicone oil release agent, it is 30cm away from the ceramic plate, so that it is a uniformly covered thin layer, and the thickness of the mixed powder is 5mm. Counterweight, press for 5 minutes, and cool to room temperature to obtain a conductive polyethylene sheet...

Embodiment 2

[0036] A kind of preparation method of manganese dioxide-conductive polypropylene composite anode plate, such as figure 1 As shown, the specific steps are as follows:

[0037] Step 1. Measure the following raw materials by volume percentage: 25% of carbon black with a particle size of 2mm, 0.5% of copper powder with a particle size of 100 mesh, and the balance being polypropylene powder with a particle size of 100 mesh.

[0038] Step 2. Fully grind the carbon black measured in step 1, fully mix it with copper powder and polypropylene powder to obtain a mixed powder, and spread the mixed powder evenly on the preheated and sprayed with silicone oil release agent on both sides of the ceramic plate In between, when spraying the silicone oil release agent, it is 35cm away from the ceramic plate, so that it is a uniformly covered thin layer, and the thickness of the mixed powder is 7mm. Counterweight, press for 15 minutes, and cool to room temperature to obtain a conductive polyeth...

Embodiment 3

[0041] A kind of preparation method of manganese dioxide-conductive polypropylene composite anode plate of the present invention, specifically implement according to the following steps:

[0042]Step 1. Measure the following raw materials by volume percentage: 40% of carbon black with a particle size of 3mm, 1% of copper powder with a particle size of 200 mesh, and the balance being polypropylene powder with a particle size of 200 mesh.

[0043] Step 2. Fully grind the carbon black measured in step 1, fully mix it with copper powder and polypropylene powder to obtain a mixed powder, and evenly spread the mixed powder on the preheated and sprayed with silicone oil release agent on both sides of the ceramic plate In between, when spraying the silicone oil release agent, it is 40cm away from the ceramic plate, so that it is a uniformly covered thin layer, and the thickness of the mixed powder is 9mm. Counterweight, press for 30 minutes, and cool to room temperature to obtain a co...

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Abstract

The invention discloses a manganese dioxide-conductive polypropylene composite anode plate preparing method. The manganese dioxide-conductive polypropylene composite anode plate preparing method specifically comprises the steps that according to the volume percent, following raw materials are measured out and comprise 5%-70% of carbon black, 0.1%-2% of copper powder and the balance polypropylene powder; the powder is mixed and flatly laid between preheated two faces of ceramic plates and is arranged in a high-temperature furnace to be pressed and formed, and a polyethylene plate is obtained; the polyethylene plate is coated with the manganese dioxide powder, then passes through the position between the preheated two faces of ceramic plates, is arranged in the high-temperature furnace to bepressed and formed, and the manganese dioxide-conductive polypropylene composite anode plate is obtained. According to the manganese dioxide-conductive polypropylene composite anode plate preparing method, the operation process is simple, through continuous net-shaped distribution of the conductive carbon black in the composite anode plate and uniform distribution of the copper powder, the electrical resistivity of conductive polypropylene is greatly reduced; and meanwhile, the composite anode plate prepared through the method has low oxygen evolution potential in the zinc electrodeposition process, and connection of surface manganese dioxide and a conductive polypropylene base body is good.

Description

technical field [0001] The invention belongs to the technical field of electrode material preparation, and relates to a preparation method of a manganese dioxide-conductive polypropylene composite anode plate. Background technique [0002] Manganese dioxide has high catalytic activity in the process of electrowinning zinc. In traditional lead-based anode plates, manganese dioxide plays a dual role of protecting the lead electrode substrate from further corrosion and catalyzing oxygen precipitation. At the same time, titanium-based manganese dioxide The anode (manganese dioxide deposited on the titanium substrate as a surface coating) also exhibits excellent performance, so manganese dioxide as the surface layer of the electrode has a good effect in the electrode zinc process. However, the use of lead-based anodes will reduce the quality of cathode zinc products (lead enters the electrolyte and then precipitates on the cathode due to corrosion), and the manganese dioxide in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C7/02C25C1/16
CPCC25C1/16C25C7/02
Inventor 杨晓红赵博文梁淑华陈科杨斌罗永光邹军涛
Owner XIAN UNIV OF TECH
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